Furnace



(No Model.) W. 2 SheetsSheet 1.

FURNACE.

Patented Dec. 30, 1890.

gm INVENTOR r i a: 6 Mama 279M4 4, 4 A

5 2' GI f WITNESSES: I 7. 4. 2? M M NrrEn STATES GEORGE \V. ENSINGER, OF ELM STATION, PENNSYLVANIA.

FURNACE.

SPECIFICATION forming part of Letters Patent No. 443,753, dated December 30, 1890.

I Application filed May 5, 1890. Serial No. 350,602. (No model.)

To all whom it may concern:

Beit known that I, GEORGE W. ENSINGER, a citizen of the United States, residing at Elm Station, Lower Merion township, Montgomery county, Pennsylvania, have invented an Improvement in Furnaces, of which the following is a specification.

My invention relates to furnaces of the type disclosed in sundry Letters Patent of the United States granted to Edward Fales, dated May 18, 1886, and numbered respectively 342,080, 342,081, 2,082, and 342,083. The Fales furnace referred to embodies an opentopped fire pot or chamber provided with a grated bottom, and disposed within and clear of the walls and above the bottom of the furnace proper, which latter is of considerably greater diameter than said pot. A second and annular grate exists within and radially and circumferentially bridges the space be tween the exterior of the pot and the furnace wall, and is usually placed at an elevation somewhat above that of the grate within the fire pot. Heretofore the fire pot and the second grate, or that exterior to the pot, have been together formed as a solid casting, and the exterior grate has been utilized to support the pot within the furnace by resting as to its outer rim upon a ledge or shoulder formed upon the inner faces of the furnace wall. In practice the Fales grate has fallen short of its possibilities of usefulness in that it has been found, in cases where it is desired to place a Fales fire pot and grate in a completed furnace to replace a grate of another construction, to be impossible to carry the fire pot and grates through the entrance to such furnace, and it has therefore been necessary to take down its wall. In cases, moreover, where breakage of or damage to any portion of the grate has occurred, it has not been possible to replace simply the destroyed portion, but it has been necessary to sacrifice the entire grate.

It is the object of my invention to so construct a grate of the Fales type as to overcome these objections, and this object I accomplish by resort to a construction hereinafter set forth, which, generally stated, consists in forming in sections, and in providing with means for locking together, certain parts which have heretofore been made as a rigid whole,and in providing special devices to take the place of the second set of grate bars in supporting the fire pot.

In the drawings I illustrate, and herein I describe, a good form of a convenient embodiment of my invention, the particular subdetail of the lugs which support the fire pot grate.

Similar letters of reference indicate corresponding parts.

In the drawings, A is the furnace, the walls of which may be of any usual form or arrangement, and B is the ash door. The charging door, not shown, conveniently exists on the side of the furnace nearest the eye in Fig. 1.

O is the fire pot, the same being, when mounted in the furnace, an opentopped receptacle of any desired dimensions, and being according to my invention formed in sections. In the drawings I show said fire pot as being circular in plan, and as being formed or composite of four segmental sections, 0 c c c, the lines of division between which are vertical. The component sections are laterally joined to each other in any preferred manner to complete the wall of the tire pot. I find it convenient to provide each section with an outwardly projecting lug at or near each of its ends or lateral margins, and of these pairs of lugs, which I respectively designate D D D D and D D D D, and which are preferably respectively cast integral with the section to which they respectively belong, I prefer to The meeting edges of the fire pot sections are, to effect a more close union, dovetailed or otherwise fitted into each other, being conveniently provided each at one edge with a tongue 6 and at the other edge with a groove c*.

The fire pot grate 1*, which I hereinafter for convenience term the lower grate, maybe supported within the fire pot in any preferred manner. It being, in the construction shown,

[0 desired that the grate should be capable of being rocked, I provide it with two lateral studs f f and with a shaking handle or red f and also provide the lower portion of the fire pot with suitable bearings within which said studs are entered. Each of these bearings are, as shown in Fig. 4, conveniently formed in lugs G which depend from the lower edge of the fire pot, and which lugs are conveniently vertically divided, the respective 2o halves appertaining to different adjacent sections of the pot.

The inner face of the furnace is provided with two supports or ledges, the lower one of which, II, I term the supporting ledge, and

the other one of which, ll, I term the grate ledge.

The arms I), radiating from the exterior of the fire pot as hereinbefore explained, are of sufficient length to extend to and rest upon 0 the supporting ledge II, and by so doing maintain the fire-pot centrally within the furnace and above its floor.

The upper edge of the fire pot, which is about level with the ledge I'l of the draw- 5 ings, embodies an external shoulder c. To

complete the furnace it is necessary to provide the second annular grate to cover the annular space between the pot and the walls. This grate, which is lettered J, is, according 40 to my invention, made in sections, of which four, respectively designated j j j are shown in the drawings. Each section rests as to its outer edge upon the ledge II and as to its inner edge upon the shoulder 0", and

5 the adjacent ends of the sections, in meeting,

simply abut against each other.

My improved grate, as is obvious, may, when breakage of any of its parts occurs, be repaired by merely substituting a new memher in place of a broken one. It is also obvious that when it is desired to introduce the grate into a furnace the wall of which already exists, the members of my improved grate may be inserted one by one through the furnace door and put together after all are within.

Having thus described my invention, I

claim and desire to secure by Letters Patent:

1. In combination with an inelosing furnace wall, a fire pot of less diameter than said inclosing furnace and supported within the same, a lower grate within the fire pot, and an upper grate surrounding the fire pot and detachable therefrom, substantially as set forth.

2. In combination with an inelosing furnace wall, a sectional fire pot, a grate within the fire pot, means for supporting the fire pot within the furnace and above the floor thereof, and a grate surrounding the fire pot, substantially as set forth.

In combination with an inclosingfurnace wall, a sectional fire pot, means for supporting said fire pot above the bottom of the furnace, a lower grate within the fire pot, and an upper grate formed in sections and surrounding the fire pot, substantially as set forth.

4. In combination with an inelosing furnace wall, a fire pot divided into sections, means for uniting said sections, supporting arms ex tending from said sections, a grate within said fire pot, and a sectional grate extending from said fire pot to the inelosing furnace wall, substantially as set forth. 8 5

5. In combination with an inelosing furnace wall embodying internal ledges or supports, an open topped fire pot formed in sections, means for uniting said sections, supporting arms extending from said sections to aledge, and a sectional grate extending from the fire pot to a ledge, substantially as set forth.

(5. In combination with an inelosing furnace wall embodying internal ledges or supports, an open topped fire pot formed of sections each of which embodies an external lug and an external arm which reaches to the ledge of the wall, the lug and arm of each section being respectively in registry with adjoining arm and lug of the adjacent sections, means for securing said meeting lugs and arms together, a shoulder formed upon the exterior of said fire pot, a grate supported within said fire pot, and a grate formed of sections which sections rest upon the exterior shoulder of the pot and a ledge of the furnace wall, substantially as set forth.

In testimony that I claim the foregoing as my invention I have hercuto signed myuame this 8th day of April, A. D. 1890.

GEORGE \V. ENSINGER.

In presence of WM. 0. S'rnAwm-nncn, .T. BONSALL TAYLOR. 

